Answer:

Step-by-step explanation:
In this problem, it is given that,
The stopping distance, D, in feet of a car is directly proportional to the square of it's speed, V.
We need to write the direct variation equation for the scenario above. It can be given by :

To remove the constant of proportionality, we put k.

k is any constant
Hence, this is the required solution.
4x² - 49y² = (2x)² - (7y)² = (2x - 7)(2x + 7)
Answer:
Sigh no body wants to answer this one, so I'll just take my points back
Answer:
x=46
Step-by-step explanation:
I don’t know the rest of the question so i can’t help with the radius bit sorry